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Article: The role of the cooperative Jahn-Teller effect in the charge-ordered La1-xCaxMnO3 (0.5<=x<=0.87) manganites

TitleThe role of the cooperative Jahn-Teller effect in the charge-ordered La1-xCaxMnO3 (0.5<=x<=0.87) manganites
Authors
KeywordsPhysics engineering
Issue Date2003
PublisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2003, v. 83 n. 25, p. 5250-5252 How to Cite?
AbstractBased on the magnetoresistance, magnetization, ultrasound, and crystallographic data, we studied the role of the cooperative Jahn–Teller (JT) effect in the charge-ordered (CO) state for La1–xCaxMnO3. We found that, with increasing the fraction of Q3 mode of JT distortion and decreasing that of Q2 mode in the CO state, the magnetic structure evolves from charge-exchange-type to C-type and the orbital ordering changes from 3dx2–r2/3dy2–r2-type to 3dz2–r2-type, with the strength of ferromagnetism and the phase separation tendency being suppressed. At the same time, the stability of the CO state and the cooperative JT lattice distortion increase. These effects imply that the cooperative JT effect with different vibration modes is the key ingredient in understanding the essential physics of the CO state. © 2003 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42489
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZheng, RKen_HK
dc.contributor.authorLi, Gen_HK
dc.contributor.authorTang, ANen_HK
dc.contributor.authorYang, Yen_HK
dc.contributor.authorWang, Wen_HK
dc.contributor.authorLi, XGen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorKu, HCen_HK
dc.date.accessioned2007-01-29T08:51:01Z-
dc.date.available2007-01-29T08:51:01Z-
dc.date.issued2003en_HK
dc.identifier.citationApplied Physics Letters, 2003, v. 83 n. 25, p. 5250-5252en_HK
dc.identifier.issn0003-6951en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42489-
dc.description.abstractBased on the magnetoresistance, magnetization, ultrasound, and crystallographic data, we studied the role of the cooperative Jahn–Teller (JT) effect in the charge-ordered (CO) state for La1–xCaxMnO3. We found that, with increasing the fraction of Q3 mode of JT distortion and decreasing that of Q2 mode in the CO state, the magnetic structure evolves from charge-exchange-type to C-type and the orbital ordering changes from 3dx2–r2/3dy2–r2-type to 3dz2–r2-type, with the strength of ferromagnetism and the phase separation tendency being suppressed. At the same time, the stability of the CO state and the cooperative JT lattice distortion increase. These effects imply that the cooperative JT effect with different vibration modes is the key ingredient in understanding the essential physics of the CO state. © 2003 American Institute of Physics.en_HK
dc.format.extent65781 bytes-
dc.format.extent28672 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics engineeringen_HK
dc.titleThe role of the cooperative Jahn-Teller effect in the charge-ordered La1-xCaxMnO3 (0.5<=x<=0.87) manganitesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-6951&volume=83&issue=25&spage=5250&epage=5252&date=2003&atitle=The+role+of+the+cooperative+Jahn-Teller+effect+in+the+charge-ordered+La1-xCaxMnO3+(0.5<=x<=0.87)+manganitesen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.1635662en_HK
dc.identifier.scopuseid_2-s2.0-0942277728-
dc.identifier.hkuros85386-
dc.identifier.isiWOS:000187341800044-

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